diff --git a/lib/dns/masterdump.c b/lib/dns/masterdump.c
index 664ef6eed5..70b0537bef 100644
--- a/lib/dns/masterdump.c
+++ b/lib/dns/masterdump.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1999-2009, 2011-2017  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2009, 2011-2018  Internet Systems Consortium, Inc. ("ISC")
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -1566,7 +1566,7 @@ writeheader(dns_dumpctx_t *dctx) {
 		 */
 		if (dctx->do_date) {
 			fprintf(dctx->f,
-				"; using a %d second stale ttl\n",
+				"; using a %u second stale ttl\n",
 				dctx->tctx.serve_stale_ttl);
 			result = dns_time32_totext(dctx->now, &buffer);
 			RUNTIME_CHECK(result == ISC_R_SUCCESS);
diff --git a/util/copyrights b/util/copyrights
index 26e997142b..a2b9f3c467 100644
--- a/util/copyrights
+++ b/util/copyrights
@@ -3454,7 +3454,7 @@
 ./lib/dns/lookup.c				C	2000,2001,2003,2004,2005,2007,2013,2016
 ./lib/dns/mapapi				X	2013,2017
 ./lib/dns/master.c				C	1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2011,2012,2013,2014,2015,2016,2017,2018
-./lib/dns/masterdump.c				C	1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2011,2012,2013,2014,2015,2016,2017
+./lib/dns/masterdump.c				C	1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2011,2012,2013,2014,2015,2016,2017,2018
 ./lib/dns/message.c				C	1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017
 ./lib/dns/name.c				C	1998,1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016,2017
 ./lib/dns/ncache.c				C	1999,2000,2001,2002,2003,2004,2005,2007,2008,2010,2011,2012,2013,2014,2015,2016,2017